Uncovered Lost Cities: The Old Amazonian Society of the Upano People.

Archeologists found many old cities in the Amazon rainforest where at least 10,000 farmers lived around 2,000 years ago. The cities and roads were hidden under the ground and were discovered using special mapping technology.

These old cities were full of large roads and buildings where people lived and had ceremonies. They were built by the Upano people at the same time the Roman Empire was big in Europe.

There might have been up to 30,000 people living there, which is as many people as lived in the biggest city in Britain back then. The society was very complex and advanced for its time.

To build such big cities without stone, people worked very hard using mud. This challenges the idea that the Amazon was mostly untouched and only had small groups of people.

This discovery adds to the evidence that the Amazon was home to many different societies before Europeans arrived. It reminds us the Amazon's history is much richer than we used to think.